Sodium alginate coating simultaneously increases the biosafety and immunotherapeutic activity of the cationic mRNA nanovaccine

The extraordinary advantages associated with mRNA vaccines, including their high efficiency, relatively low severity of side effects, and ease of manufacture, have enabled them to be a promising immunotherapy approach against various infectious diseases and cancers. Nevertheless, most mRNA delivery carriers have many disadvantages, such as high toxicity, poor biocompatibility, and low efficiency in vivo, which have hindered the widespread use of mRNA vaccines. To further characterize and solve these problems and develop a new type of safe and efficient mRNA delivery carrier, a negatively charged SA@DOTAP-mRNA nanovaccine was prepared in this study by coating DOTAP-mRNA with the natural anionic polymer sodium alginate (SA). Intriguingly, the transfection efficiency of SA@DOTAP-mRNA was significantly higher than that of DOTAP-mRNA, which was not due to the increase in cellular uptake but was associated with changes in the endocytosis pathway and the strong lysosome escape ability of SA@DOTAP-mRNA. In addition, we found that SA significantly increased the expression of LUC-mRNA in mice and achieved certain spleen targeting. Finally, we confirmed that SA@DOTAP-mRNA had a stronger antigen-presenting ability in E. G7-OVA tumor-bearing mice, dramatically inducing the proliferation of OVA-specific CLTs and ameliorating the antitumor effect. Therefore, we firmly believe that the coating strategy applied to cationic liposome/mRNA complexes is of potential research value in the field of mRNA delivery and has promising clinical application prospects.

Characteristics and management mechanism of imported malaria from overseas during the malaria elimination phase in Wuhan City / 公共卫生与预防医学

Objective To analyze the characteristics of imported malaria epidemic from overseas in Wuhan, to explore the management mechanism of on-site cases, and to accumulate experience for the treatment of imported malaria in large cities after malaria elimination. Methods The epidemiological data on imported malaria from abroad during the period of malaria elimination (2010-2019) in Wuhan were collected. The gender, age and severe illness-related factors of the cases were analyzed. Based on the characteristics of the epidemic and the current situation of prevention and control, the content and experience of the “Municipal-District 24-7” case mechanism were discussed. Results The medical resources in Wuhan were the best in the central region, resulting in a large number of imported malaria cases, with a total of 474 cases reported from 2010 to 2019 (40.79% of the total number of cases in Hubei Province), including 359 cases of falciparum malaria, 36 severe cases and one death (the death rate was 0.28%). The patients were mainly young and middle-aged men aged 20 to 49 years old (97.26%). There were many referral cases (40.30%), and there was no seasonal clustering of cases reported. The undiagnosed proportion at the first visit was 44.85%, and the time of attack-diagnosis was 4 days or more in 61.00% of cases. The occurrence of severe cases was related to unconfirmed diagnosis at the first visit (χ2=35.46, P<0.001) and attack-diagnosis time (Z=-6.49, P<0.001). Conclusion Imported malaria occurs frequently in Wuhan, mainly falciparum malaria. However, “Municipal-District 24-7” case mechanism has effectively curbed the occurrence of severe and death cases and provided valuable experience for case management in similar cities in China.

Effect of acupuncture and moxibustion on skin barrier function in guinea pigs with eczema of skin damp-heat accumulation / 中国针灸

OBJECTIVE@#To observe the effect of acupuncture and moxibustion on the water content of stratum corneum (WCSC), expression of serum inflammatory factors and aquaporin 3 (AQP3) in skin, lung and rectum in guinea pigs with eczema of skin damp-heat accumulation, and to explore the possible mechanism of acupuncture and moxibustion for regulating skin barrier function.@*METHODS@#A total of 24 male albino guinea pigs were randomly divided into a blank group (n=6) and a modeling group (n=18). The guinea pigs in the modeling group were induced by 2,4-dinitrochlorobenzene (DNCB) to establish the eczema model of skin damp-heat accumulation. The guinea pigs with successful modeling were further randomly divided into a model group, a medication group and an acupuncture-moxibustion group, 6 guinea pigs in each group. The guinea pigs in the medication group were treated with loratadine tablets (0.8 mg/kg) by gavage, once a day for 7 days; the guinea pigs in the acupuncture-moxibustion group were treated with acupuncture at "Feishu" (BL 13), "Pishu" (BL 20), "Quchi" (LI 11), "Zusanli" (ST 36) and "Xuehai" (SP 10); at the same time, moxibustion was applied at "Feishu" (BL 13) and "Zusanli" (ST 36), moxibustion intervention for 10 min and needle retaining for 15 min at each acupoint, once a day for 7 days. The eczema area and severity index (EASI) score was evaluated before and After intervention, and WCSC and trans-epidermal water loss (TEWL) were measured by skin tester. After intervention, The HE staining was used to observe the changes of skin histomorphology in each group; ELISA was used to measure the contents of serum immunoglobulin E (IgE), interleukin (IL)-4 and IL-17; Western blot was used to measure the protein expression of AQP3 in skin, lung and rectum.@*RESULTS@#Before the intervention, compared with the blank group, the EASI scores and TEWL were increased in the remaining groups (P<0.01), and the WCSC was decreased (P<0.01). After the intervention, compared with the model group, the EASI scores and TEWL were decreased (P<0.05, P<0.01), and WCSC was increased (P<0.01) in the medication group and the acupuncture-moxibustion group. The epidermal structure in the blank group was complete and the fibers in the dermis were arranged orderly; in the model group, epidermal hyperkeratosis, proliferation of granular layer, spinous cell layer and basal layer, and disordered arrangement of dermal fibers and infiltration of inflammatory cells were observed. The morphological performance in the medication group and the acupuncture-moxibustion group was better than that in the model group. Compared with the blank group, the contents of serum IgE and IL-17 were increased (P<0.01), and the content of serum IL-4 and the protein expression of AQP3 in skin, lung and rectum were decreased in the model group (P<0.01, P<0.05). Compared with the model group, the contents of serum IgE and IL-17 were decreased and the contents of serum IL-4 were increased in the medication group and the acupuncture-moxibustion group (P<0.01), and the protein expression of AQP3 in skin, lung and rectum in the acupuncture- moxibustion group were increased (P<0.05). Compared with the medication group, the contents of serum IgE and IL-17 were increased (P<0.01), and the content of serum IL-4 was decreased (P<0.01) in the acupuncture-moxibustion group.@*CONCLUSION@#Acupuncture and moxibustion could improve the epidermal water metabolism and skin tissue morphology in guinea pigs with eczema of skin damp-heat accumulation. Its mechanism may be related to regulating inflammatory factors, up-regulating the expression of AQP3, and then repairing the skin barrier function.

Efficacy of Fuzheng Huayu Tablets for Treating Pulmonary Inflammation in COVID-19 Patients / 中国实验方剂学杂志

ObjectiveTo observe the efficacy and safety of Fuzheng Huayu tablets （FHT） for treating pulmonary inflammation in patients with coronavirus disease 2019 （COVID-19）. MethodA total of 70（4 cases were lost to follow-up, and 66 cases were finally completed） COVID-19 patients were recruited from February 1 to April 15 in 2020. They were assigned to a control group （35 patients） and a FHT group （31 patients）. The patients in the control group received routine treatment alone and those in the FHT group received FHT in addition to routine treatment. The primary outcome was the ratio of patients showing improvement in chest computed tomographic manifestations after 14 days. The secondary outcome measures included remission rate or progression rate of critical illness， clinical remission rate of respiratory symptoms， routine blood examination， C-reactive protein （CPR） level， procalcitonin （PCT） level， and blood oxygen saturation （SPO2）. The safety was assessed based on liver and kidney functions and adverse events. ResultAfter the 14-day treatment， the ratio of patients showing improvement in the FHT group （100%） was higher than that in the control group （77.1%） （χ2=8.063，P<0.01）. The ratio of disease stages after treatment showed no significant difference between two groups. In the FHT group， the symptoms including cough， dyspnea， and fatigue were alleviated after treatment （P<0.01）. In the control group， the symptoms including fever， cough， and dyspnea were alleviated （P<0.01）， while the fatigue was not relieved after treatment. No significant difference was observed in the clinical symptoms between the two groups after treatment. After treatment， the FHT group showed decreased white blood cell （WBC） count and neutrophil-to-lymphocyte ratio （NLR） （P<0.01）， elevated platelet （PLT） level （P<0.05）， lowered CRP level （P<0.05）， and no significant difference in lymphocyte （LYM）， hemoglobin （Hb）， SPO2 or PCT level. The control group showed decreased NLR （P<0.05） and WBC count （P<0.01）， elevated PCT level （P<0.05）， and no significant change in LYM， Hb， PLT， SPO2 or CRP level after treatment. Furthermore， the FHT group had higher PLT level than the control group （P<0.05） after treatment， and other indicators had no significant differences between the two groups. The liver and kidney functions had no significant difference between the two groups after treatment. ConclusionFHT can safely promote the absorption of acute pulmonary inflammation in COVID-19 patients.

The effects and mechanism of caloric restriction on energy metabolism / 生理学报

Caloric restriction (CR) is explored to limit the caloric intake without malnutrition. CR can affect the levels of various metabolites in organism, such as lipids, free fatty acids, ketones, bile acids and amino acids, etc, and is thought being able to extend the lifespan, postpone and reduce the incidence of age-related disorders (e.g., type 2 diabetes, cancer and cardiovascular diseases). These effects are mainly attributed to the role of CR in energy metabolism. The mechanism of CR on energy metabolism is closely related to biological clock, hormonal production, gastrointestinal flora and inflammation. Here we briefly review the effects and mechanism of CR on energy metabolism.

Research on Therapeutic Mechanism of Canhuang Tablets on Jaundiced Rats Induced by ANIT / 中国实验方剂学杂志

Objective:To explore the therapeutic mechanism of Canhuang tablets on the mRNA and protein expression of farnesoid X receptor (FXR), uridine diphosphate glucuronosyltransferase 1A1 (UGT1A1) and multidrug resistance associated protein 2 (MRP2) in the liver of jaundiced rats induced by α-naphthalene isothiocyanate (ANIT). Method:The rats were divided into normal group, model group, Canhuang tablets (CHP) group and ursodeoxycholic acid tablets (UDCA) group. The jaundice model was reproduced by ANIT. After the intervention of the corresponding drugs, the contents of total bilirubin (TBIL), total bile acid (TBA), alanine aminotransferase (ALT), aspartate aminotransferase (AST) and alkaline phosphatase (ALP) in serum and the liver histopathology were examined to evaluate the therapeutic effect of CHP. The relative mRNA and protein expressions of FXR, UGT1A1 and MRP2 in rat liver tissues were detected by reverse transcription-polymerase chain reaction (RT-PCR) and Western blot. Result:CHP can significantly reduce the increase of TBIL, TBA, ALT, AST and ALP caused by ANIT in rat serum, and inhibit the liver pathological changes, which showed that the removing jaundice effect of CHP was better than UDCA. Compared with the normal group, ANIT significantly inhibited the mRNA levels of FXR, UGT1A1 and MRP2 in rat liver tissues after modeling (P<0.01). Compared with the model group, CHP and UDCA significantly increased the mRNA levels of target genes of each protein after intervention (P<0.01), and CHP was superior to UDCA in improving the mRNA level of bilirubin metabolizing enzyme UGT1A1 (P<0.01). In the aspect of affecting protein expression, compared with the normal group, ANIT modeling significantly increased the expression of FXR in rats (P<0.05). CHP intervention showed a tendency to promote the expression of FXR, while UDCA did not, but there was no significant difference between them. In the aspects of promoting bilirubin metabolism and bile excretion, the expressions of UGT1A1 and MRP2 were significantly decreased by ANIT modeling (P<0.01), while the expressions of UGT1A1 and MRP2 proteins were significantly increased after treatment of CHP (P<0.01). CHP was superior to UDCA in increasing the expression of bilirubin and bile acid efflux protein MRP2 (P<0.01). Conclusion:The jaundice abating mechanism of CHP is related to activating FXR mRNA expression in liver, promoting the mRNA and protein expression of bilirubin metabolizing enzyme UGT1A1 and bile acid transporter MRP2, improving liver metabolism of free bilirubin and promoting bile acid excretion from the liver, and alleviating cholestatic liver injury.

Three new bioactive flavonoid glycosides from Viscum album / 中国天然药物

Two new flavonoid glycosides, named viscumneoside XII (1), and viscumneoside XIII (2); a new dihydrogen flavonoid glycoside product named viscumneoside XIV (3), were isolated from the aerial part of Viscum album, along with seven known compounds (4-10). Their structures were identified by analysis of spectroscopic data. In addition, cytotoxicity assay showed that 1, 2 and 3 possessed significant inhibitory activities against C6, A549 and MDA-MB-231 (the inhibition rate arrived about 50%, 70% and 74% respectively with IC ≤ 60.00 μmol·L), while the inhibition of TF-1 and Hela was not significant.

Discussion on Therapeutic Mechanism of Canhuang Tablets for Jaundice with Molecular Docking / 中国实验方剂学杂志

Objective:To explore the mechanism of treatment of jaundice with Canhuang tablets by molecular docking. Method:The compounds of Canhuang tablets were screened in traditional Chinese medicine systems pharmacology database and analysis platform(TCMSP),and targets for treatment of jaundice were collected from the comparative toxicogenomics database(CTD) and DrugBank database.Molecular docking was carry out on the LibDock module of Discovery Studio 2016 software to evaluate the compound-target interaction,and network characteristics were analyzed. Result:A total of 37 compounds in Canhuang tablets had strong interaction on 14 targets,such as pregnane receptor(PXR),constitutive androstane receptor(CAR),farnesoid X receptor(FXR),et al.These targets played an important role in the treatment of jaundice by regulating bilirubin metabolism,regulating bile acid synthesis and transport,inhibiting immune and inflammatory response,and affecting the formation of collagen in the liver.The compound-target network analysis found that moupinamide,canadine,quercetin,demethoxycurcumin,obacunone,curcumin,corchoroside A,berlambine,alnustone,naringenin were the possible main active compounds of Canhuang tablets,which could interact with more than 7 targets. Conclusion:Molecular docking reveals the possible active compounds and the mechanism of treatment of jaundice with Canhuang tablets,and which is conducive to improvement of quality control standard of this preparation and study of its mechanism for jaundice.

Limonoids from seeds of Azadirachta indica and their cytotoxic activity / 中国中药杂志

Eight limonoids were isolated from 95% ethanol extracts of neem(Azadirachta indica) seeds by various chromatographic methods. By comparison of their spectroscopic data with those reported in the literatures, these limonoids were determined as salannin(1), 1-detigloyl-1-isobutylsalannin(2), salannol-3-acetate(3), salannol(4), spirosendan(5), 1-detigloyloxy-3-deacetylsalannin-1-en-3-one(6), nimbin(7) and 6-deacetylnimbin(8). Compounds 2 and 5 were firstly isolated from this genus and 5 represented the only example of its type. And 6 is a new natural product. 6 showed inhibitory activity against HeLa and HL-60 cells, with IC₅₀ of(21.61±4.37) and(27.33±5.74) μmol·L⁻¹, respectively. Both 7 and 8 mildly inhibited the growth of HeLa cells, with IC₅₀ of (33.15±5.24) and (38.56±6.41) μmol·L⁻¹, respectively.

A Study on the Perioperative Clinical Efficacy of Restrictive Blood Transfusion Combined with Hyperbaric Oxygen Preconditioning on the THA and TKA / 现代生物医学进展

Objective:To compare the clinical effects of restrictive blood transfusion combined with hyperbaric oxygen preconditioning (HBOPC) and restrictive blood transfusion in the treatment of hip,knee arthroplasty (THA,THA).Methods:40 patients in the period of epidural anesthesia,femoral nerve hysteresis hip and knee arthroplasty were selected and randomly divided into two groups:restrictive transfusion group (maintain 80 g/L≤ Hb ＜100 g/L,n=20) and restrictive blood transfusion combined with HBOPC (HBOPC+maintain 80 g/L =Hb ＜100 g/L,n=20).The red blood cell transfusion,red blood cell transfusion rate,perioperative Hb,blood oxygen saturation (SO2),the incidence of hypotension during operation,hospitalization time and postoperative cerebral infarction,acute pulmonary embolism,pneumonia,myocardial infarction,wound infection rate and 90 days mortality rate were compared between two groups.Results:Compared with the restrictive transfusion group,the postoperative Hb,blood oxygen saturation (SO2) of restrictive blood transfusion combined with HBOPC group were significantly increased(P ＜ 0.05);the red blood cell transfusion,red blood cell transfusion rate,incidence of pneumonia,wound infection rate were significantly decreased (P＜0.05).Conclusion:Restrictive blood transfusion combined with hyperbaric oxygen preconditioning could improve the anoxic state of the hip,knee arthroplasty patients,which could effectively reduce red blood cell transfusion,reduce postoperative complications,has good clinical curative effect.

Chemical constituents from branch of Fraxinus sieboldiana / 中国中药杂志

Using a combination of various chromatographic techniques including column chromatography over silica gel, Sephadex LH-20, macroporous adsorbent resin, and reversed-phase HPLC, 115 compounds including diterpenes, sesquiterpenes, treterpenes, coumarins, lignans, fatty acid derivatives, and simple aromatic derivatives were isolated from an ethanol extract of branch of Fraxinus sieboldiana (Oleaceaue), and their structures of the compounds were elucidated by spectroscopic methods including 1 D, 2D NMR and MS techniques. Among them, 41 compounds were new. In previous reports, we have been described the isolation, structure elucidation, and bioactivities of the 41 new compounds and 22 known orii including 8 coumarins, 4 phenolic and 12 phenylethanoidal glycosides. As a consequence, we herein reported the isolation and structure elucidation of the remaining 50 known compounds including 8- hydroxy-12-oxoabieta-9(11),13-dien-20-oic 8, 20-lactone(1), 6beta-hydroxyfcrruginol(2),(+)-pisiferic acid(3), (+)-pisiferal(4),(+)-7-dehydroabiet6none(5), 1-oxomiltirone(6), subdigitatone(7), linarionoside B(8), (9S)-linarionoside B(9), (3R,9R)-3-hydroxy-7,8-dihydro-beta-ionol 9-O-beta-D-apiofuranosyl-(1-->6)-beta-D-glucopyranoside(10), ursolic acid(11), betulinic acid(12), euscaphic acid(13), (+)-syringaresinol(14), (+)-fraxiresinol(15), (+)-1-hydroxysyringaresinol(16), pinoresinol(17), medioresinol(18), 8-acetoxypinoresinol(19), epipinoresinol(20), (-)-olivil(21), (+)-cyclo-olivil(22), 3,3'-dimethoxy-4,4',9-trihydroxy-7,9'-epoxylignan-7'-one(23),(+)-1-hydroxypinoresinol 4'-O-beta-D-glucopyranoside (24), (+)-1-hydroxypinoresinol 4"-O-beta-D-glucopyranoside(25),(+)-syringaresinol O-beta-D-glucopyranoside (26), liriodendrin (27), ehletianol D(28), icariside E5(29) (-)-(7R, 8R)-threo-1-C-syringylglycerol(30),(-)-(7R, 8S)-erythro-guaiacylglycerol (31),(-)-(7R, 8R)-threo-guaiacylglycerol(32), 3-(4-beta-D-glucopyranosyloxy-3-methoxy)-phenyl-2E-propenol(33),2,3-dihydroxy-l-(4-hydroxy-3,5-dimethoxyphenyl)-1-propanone(34), 2,3-dihydroxy-1-(4-hydroxy-3-methoxyphenyl)-1-propanone (35), 3-hydroxy-l-(4-hydroxy-3,5-dimethoxyphenyl)-1-propanone(36), omega-hydroxypropioguaiacone(37), sinapyladehyde(38), trans-p-hydroxycinnamaldehyde(39), syringic acid(40), vanilic acid(41), vanillin(42), 4-hydroxy-benzaldehyde (43), (24R)-24-ethyl-5alpha-cholestane-3beta,5,6beta-triol(44), beta-sitosterol(45), daucosterol(46), 2,6-dimethoxy-I,4-benzoquinone(47), 2,6-dimethoxy-pyran-4-one(48), 1-(beta-D-ribofuranosyl)uracil(49), and mannitol(50). Compouds 1-7,12,18,28-37,44 and 48 were obtained from the genus Fraxinus for the first time.

Study on preparation process and formulation optimization of herpetin liposomes / 中国中药杂志

Herpetin (HPT) is an active monomer constituent isolated from lignanoid in seeds of Herpetospermum caudigerum. HPT shows inhibitory effects in hepatic injury and HBV-DNA and the replication. In the study, we successfully prepare herpetin liposomes by film dispersion method for the first time. The prescription process was optimized, with the entrapment efficiency as the index. According to the optimized prescription, the mass ratio of HPT: phospholipids: cholesterol was 2.44:78.05: 19.51, the hydration and de-molding process was performed with 0.5% F68 solution at 50 degrees C, and the water-bath ultrasonic time was 20 min. The HPT liposomes prepared by this method showed an average entrapment efficiency of (94.50 +/- 2.15)% and a particle size of (119.2 +/- 10.7) nm, which was consistent with the trial expectations and will lay a solid foundation for the hepatic targeting delivery system in future.

Flavonoids from root of Machilus wangchiana / 中国中药杂志

Twelve flavonoids were isolated from an ethanol extract of Machilus wangchiana by a combination of various chromatographic techniques including column chromatography over silica gel and Sephadex LH-20 and reversed-phase flash chromatography and HPLC. Their structures were identified by spectroscopic data analysis (IR, MS, and NMR) as (+)-catechin (1), (-)-epicatechin (2), 3'-O-methyl-(+)-catechin (3), 3'-O-methyl-(-)-epicatechin (4), 3, 5, 7, 2', 5'-pentahydroxy flavan (5), (-)-naringenin (6), (-)-eriodictyol (7), (-)-liquiritigenin (8), (2R,3R)-(+)-dihydrokaempferol (9), (2R,3S)-(-)-dihydro- kaempferol (10), (2R, 3R)-(+)-taxifolin (11), and quercetin (12). Compounds 1-10 are isolated from the genus Machilus for the first time.

Effects of combination of puerariae lobatae radix and salviae miltiorrhizae radix et rhizoma on lipid metabolism in atherosclerotic quails / 中国中药杂志

In present study, cholesterol/high fat diet-induced atherosclerotic quails were used to evaluate the effects of combination of Puerariae Lobatae Radix and Salviae Miltiorrhizae Radix et Rhizoma (1: 1, abbreviated as PRSM) on lipid metabolism, liver index, apolipoprotein levels. The results obtained from this study indicated that oral administration of ethyl acetate extract of PRSM at doses of 7.5, 5.0, 2.5 g x kg(-1) as well as aqueous extract of PRSM at dose of 7.5 g x kg(-1) could reduce the serum cholesterol (TC), triglycerides (TG), low density lipoprotein cholesterol (LDL-C) and very low density lipoprotein cholesterol (VLDL-C) levels as well as the weight of liver and liver index, and increase the serum level of high density lipoprotein cholesterol (HDL-C). Furthermore, reduced levels of apolipoprotein B (ApoB) and elevated levels of apolipoprotein A1 (ApoA1) were observed in ethyl acetate extract and aqueous extract of PRSM treated atherosclerotic quails. All results demonstrate that PRSM possess a regulatory role on lipid metabolism disorders in atherosclerotic quails, which may be the pharmacological basis of PRSM for preventing the development of atherosclerosis.

Development of therapeutic antibodies for gastric and colorectal cancers / 浙江大学学报·医学版

With the elucidation of structures and functions, antibodies are widely applied in the diagnosis and treatment of diseases. Today, therapeutic antibodies have played ever increasing roles in the treatment of cancers. In fact, there are over 20 monoclonal antibodies which have been approved by the U.S.Food and Drug Administration (FDA) for the therapeutic use in cancers. For the gastric and colorectal cancers, there are at least 9 antibodies have been approved for cancer therapy or for clinical trials. These antibody drugs target to tumor associate antigens and can destroy the cancer cells through several mechanisms such as antibody-dependent cell cytotoxicity, complement-dependent cytotoxicity, blockage of blood nutrition and crucial signaling pathways. With the progress in gene engineering technology, the diverse structures of antibodies can be created. In addition, the antibody-conjugates with radioisotopes, toxins and cytotoxins, are also designed for targeted therapy of gastric and colorectal cancers. In this article, we review the trends in the clinical development and application of antibody drugs for future research and development of the rapidly expanding therapeutic modality in gastric and colorectal cancers.

Discussing displacemental trend on nontractional side of canine mandible with finite element method when distraction osteogenesis with unilateral incomplete osteotomy / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To discuss the trend of displacement on the side of nondistraction when distraction osteogenesis with unilateral incomplete osteotomy of canine mandible.</p><p><b>METHODS</b>The method of finite element analysis was used to simulate distraction osteogenesis with unilateral incomplete osteotomy and the displacement of six marked point such as the temporomandibular joint and the angle of mandible and coracoid process and teeth were observed on nondistractional side when the transport disc was distracted with a distance and without a distance.</p><p><b>RESULTS</b>When the transport disc was distracted without a distance, the Von Mises stress was 0 in the six marked point of nondisractional side and their displacement in 3 dimensions (X, Y, Z axis) was 0. When the transport disc was distracted with 1 mm width, all marked point had some displacement.</p><p><b>CONCLUSION</b>When distracted and observed from the side of distraction, the mandible at the side of nondistraction has the trend of contrarotation round the center of the transverse ridge mid-point of condyle process on the plane of sagittal, whereas it has the trend of parallel movement approximately in the direction of opposite side on the plane of coronary.</p>

Minor new constituents from Heteroplexis micocephala / 药学学报

By using a combination of various chromatographic techniques including column chromatography over silica gel and Pharmadex LH-20 and reversed-phase HPLC, two minor new compounds, labda-12, 14-dien-6beta, 7alpha, 8beta, 17-tetraol (1), 2, 3-cis-6-acetyl-5-hydroxy-2-(hydroxymethylvinyl)-2, 3-dihydrobenzofuran-3-ol angelate (2), and a minor new natural product 6-methoxy-4-methyl-3, 4-dihydro-2H-naphthalen-1-one (3) have been isolated from an ethanolic extract of Heteroplexis micocephala. Their structures were elucidated with spectroscopic data analysis including 2D NMR experiments.

Acute hemodynamic effects of intravenous recombinant human brain natriuretic peptide in patients with acute myocardial infarction complicated with heart failure / 中华心血管病杂志

<p><b>OBJECTIVE</b>To compare the acute hemodynamic effects and safety of intravenous injection of recombinant human brain natriuretic peptide (rhBNP) versus intravenous nitroglycerin (NIT) in acute myocardial infarction (AMI) patients with heart failure.</p><p><b>METHODS</b>On top of standard therapy, 42 consecutive patients who suffered from anterior wall AMI with heart failure [pulmonary capillary wedge pressure (PCWP) > 16 mm Hg] within 12 to 24 hours from the onset of chest pain were randomized into rhBNP group (n = 21, 1.5 microg/kg bolus intravenous injection followed by 0.0075 microg.kg(-1).mn(-1) for the first 3 hours and 0.015-0.03 microg.kg(-1).mn(-1) infusion for following 21 hours) and NIT group (n = 21, 10 to 100 microg/mn intravenous infusion for 24 hours). The hemodynamic parameters were monitored by Swan-Ganz catheter at baseline, during drug infusion and 6 hours post infusion withdraw; total urine output was also obtained. The major adverse cardiac events (MACE) were observed up to 1 week after drug infusions.</p><p><b>RESULTS</b>Central venous pressure and systolic blood pressure remained unchanged after rhBNP or NIT infusion. Compared to baseline level, PCWP was significantly reduced by 48.9% (P < 0.01) at 30 minutes after rhBNP infusion and this effect remained up to 6 hours post infusion withdraw; PCWP reduced by 28.7% (P < 0.05) at 2 hours after NIT infusion and this effect remained to 6 hours before infusion withdraw. Cardiac index (CI) was increased by 27.1% (P < 0.05) at 1 hour after rhBNP infusion and remained till 6 hours post infusion withdraw; CI was significantly increased at 3 hour after NIT infusion and this effect disappeared after infusion withdraw. The PCWP and CI values were significantly higher in rhBNP group than that of NIT group at 30 minutes and 2 hours (P < 0.05). Heart rate was significantly reduced at 30 minutes (95.3 +/- 7.4 vs. 118.0 +/- 8.2 bpm, P < 0.05) and at 2 hour (92.8 +/- 6.8 vs. 109.2 +/- 7.6 bpm, P < 0.05) in rhBNP and NIT group, respectively and heart rate remained reduced during the whole infusion period in both groups. The total urine output for 30 hours in rhBNP group (1870 +/- 535 ml) tended to be higher than that in NIT group (1538 +/- 620 ml, P > 0.05). There was no symptomatic hypotension or other adverse events during drug infusion in both groups and MACE up to 1 week post drug infusion was also similar between the two groups.</p><p><b>CONCLUSION</b>Intravenous injection of rhBNP results in more rapid and long-lasting hemodynamic improvements than that of NIT in AMI patients with heart failure and it is also feasible and safe for clinic use in AMI patients with heart failure.</p>